Let's try an analogy:
You are mayor of a city with streets that are over congested. The first step in solving this problem is to admit that the streets are over congested ( if no admittal of the problem, then no honest attempt can come about to solve it).
So, you work with your planning department on a multi faceted solution. This will come in the form of wider streets and better traffic control, along with upgrading the capacity of public transportation.
So, while you have both acknowledged the problem and taken, among other steps, a step that gives more people the choice not to drive a car, at no point have you "banned cars" or limited the number of cars people can own.